The discovery of a slain Palestinian teen in Jerusalem early Wednesday further inflamed tensions in a region already unsettled over the killings of three Israeli teens , not to mention decades of entrenched enmity between all sides .

Mohammad Abu Khedair , 17 , was heading from his home to a mosque in the middle-class neighborhood of Shuafat for prayers around 4 a.m. when three men forced him into a car and drove off , his father , Hussain Abu Khedair , told CNN . His body was found about an hour later at a forest in Jerusalem .

The killing quickly triggered condemnations from Palestinian and Israeli leaders , as well as from the United States .

Abducted Palestinian teen was kind , beloved

Those who spoke out passionately included an uncle of one of the three Israeli teens whose bodies were found earlier this week . He called the young Palestinian 's killing `` a forbidden action , and it has no forgiveness . ''

`` Any act of revenge of any kind whatsoever is completely inappropriate and wrong . Murder is murder , '' said Yishai Frankel , uncle of Naftali Frankel , a 16-year-old dual Israeli-American citizen , to Israel 's Channel 2 . `` One should not differentiate between bloods , be it Arab or Jew .

Israeli authorities are probing Wednesday 's death , with police spokesman Micky Rosenfeld tweeting this effort will try to determine if it is a `` criminal or nationalistic '' act -- the latter term referring to a politically motivated act in retaliation for the Israeli teens ' killings .

Mark Regev , a spokesman for Prime Minister Benjamin Netanyahu , told CNN late Wednesday that investigators `` at this stage can not say who did this killing . '' This came hours after Netanyahu 's office promised a speedy investigation to find `` who is behind this despicable murder and the background to this act , '' according to a statement from his office .

`` Netanyahu calls on all sides not to take the law into their own hands . Israel is a country of law and everyone is ordered to act according to the law . ''

The killing riled many Palestinians , particularly in Jerusalem . But it did n't happen in isolation .

Israelis and Palestinians continue to trade blows -- over longstanding issues unrelated to Abu Khedair 's death -- through rocket attacks and airstrikes .

All this violence , from various angles , leads to one big question : When will it stop ?

Report : Body was ` charred and bore signs of violence '

`` Settlers '' kidnapped the teenager and his body `` was charred and bore signs of violence , '' according to the Palestinian state news agency WAFA . DNA , through saliva samples , was used to positively identify the boy , his father said .

Rosenfeld told the Jerusalem Post the teen had significant burn marks . The same Israeli publication also reported police are looking into previous kidnap attempts on members of the teenager 's family related to a personal dispute .

Yet Hussain Abu Khedair , the boy 's father , blamed Israelis and vehemently denied reports that this may have been tied to any sort of family dispute .

`` Netanyahu is responsible for the crime , '' the father told CNN , `` because he is the one who is giving the settlers the cover and supporting them . ''

The teen 's cousin , Majdi Abu Khedair , said whoever carried out the abduction was driving a car that had been used in an attempted abduction two days ago . A similar claim was made to Haaretz by Knesset member Ahmed Tibi .

The cousin passionately suggested : `` The Israeli police and Israeli government should do the same as they have done in Hebron : Demolish and blow the settler houses who have done this crime . ''

The Israeli military destroyed the homes of the two suspects in the killings of the three Israeli teens .

When confronted with this suggestion , Regev insisted `` we are totally color blind when it comes to this sort of criminal act . ''

`` There 's no difference between a Jewish resident of Jerusalem or an Arab resident of Jerusalem , '' the spokesman said . '' ... Police will get to the bottom of this . ''

`` It is sickening to think of an innocent 17-year-old boy snatched off the streets and his life stolen from him and his family , '' said Secretary of State of John Kerry , who talked with Netanyahu by phone about the situation . `` There are no words to convey adequately our condolences to the Palestinian people . ''

He noted that both Israeli and Palestinian officials have condemned it , and he added to Netanyahu 's call . `` Those who undertake acts of vengeance only destabilize an already explosive and emotional situation . ''

Palestinian Authority President Mahmoud Abbas , who heads the Fatah party and is based in the West Bank , called Mohammad Abu Khedair 's father and promised that those behind his abduction and death will be brought to justice , WAFA , the Palestinian state news agency , reported .

And Hamas -- the militant Islamic organization that controls Gaza -- said in a statement that it holds the `` Israeli occupation -LRB- fully -RRB- responsible , '' adding that the incident `` exposes -LRB- Israel 's -RRB- ugly ... racism '' and `` refutes the Israeli narration of being the victim all the time . ''

Anger , clashes in Palestinian neighborhoods of Jerusalem

As news of the boy 's death spread , public anger in Palestinian neighborhoods of Jerusalem rose to levels rarely , if ever , seen since the Second Intifada , or uprising , last decade .

That led to several clashes around the city , the biggest of which was centered in Shuafat .

Residents there threw stones at security forces and the Israeli authorities responded with occasional volleys of stun grenades or tear gas . Some protesters attacked two Palestinians whom they mistook for undercover Israeli police , The Jerusalem Post reported .

The clashes expanded and continued through midnight in the Palestinian neighborhood , with a large amount of Israeli forces on hand .

In Suwwaneh , Palestinians threw rocks at a nearby settlement and several of them were injured by rubber bullets , witnesses said . And some tossed Molotov cocktails at an Israel settlement in Silwan , outside Jerusalem 's Old City .

The Palestinian Red Crescent Society reported that more than 100 were injured , most of them in Shuafat , in the clashes .

There were concerns that the Palestinian teenager 's funeral could spark further unrest . But his father said Thursday he was still waiting to hear from Israeli authorities when the body would be handed over to the family .

`` The autopsy should be done around 1 p.m. , and then I am supposed to wait for a call , '' Hussain Abu Khedair said on Palestinian television .

`` We will not bury my son at night , '' he said . `` We will do it during the day . If they purposely delay , we will do it during the day even -LRB- if that means -RRB- tomorrow . ''

Israeli airstrikes into Gaza

Meanwhile , the dangerous back-and-forth between Gaza and Israel was erupting yet again .

Rockets from the Palestinian territory into Israel was met by at least eight airstrikes within about an hour early Thursday .

Three hit a Hamas intelligence building in Gaza city , while at least one struck the Qassam training camp in Beit Hanoun .

Palestinian medical sources reported at least 10 injured , one of them seriously .

Israel Defense Forces said the airstrikes -- going after 15 Hamas targets -- were in response to the firing of more than 20 rockets into Israel since Wednesday .

This is in addition to other actions -- including the arrests of hundreds of Hamas activists , the demolition of homes and the closure of dozens of institutions in Gaza , according to Netanyahu -- targeting Hamas and focused in Gaza . This action follows the abduction of Israeli teens Eyal Yifrach , Gilad Shaar and Naftali Frankel as they were on their way home from school June 13 ; the three were found dead on Monday in a West Bank field .

Hamas praised the kidnappings but denied that it was responsible for what happened . It warned that if Netanyahu `` brings a war on Gaza , the gates of hell will open to him . ''

At the teens ' funerals , Netanyahu said the country would avenge their deaths at `` the hands of evil men . ''

`` A broad moral gulf separates us from our enemies , '' he said . `` They sanctify death ; we sanctify life . They sanctify cruelty and we mercy and compassion . That is the secret of our strength . ''

Opinion : Teens ' killing hurts Israelis , bad for Palestinians

Opinion : Slain teens call for justice , not escalation

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The boy 's father says he 's waiting to hear when authorities will hand over the body

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Israeli military says its airstrikes were focused on 15 Hamas targets in Gaza

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This comes amid Palestinian anger over the kidnapping , killing of a teen

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Israel vows to get those responsible ; late teen 's father blames Netanyahu